I think Marcel's circuit above is the simplest possible one that doesn't use a PLL. However, since you say "Lock indicator", I guess you're looking for a PLL-based solution. If so, refer to 74HC4046 , 7046 , 9046 datasheets, preferably the older ones from Philips.
the simplest is the silego based freq detector, it is a about 2% accurate, and has minimal parts.
Okay. How are you defining 'Lock' in that case? Usually 'Lock' is for when a PLL has locked onto an incoming clock frequency. IIUC, TDA1541 does not have an internal ASRC or PLL, so 'Lock' refers to some other thing here?
In the past I have used the DATA signal as a lock source + a transistor and some resistors and of course an LED
Markw4
Enough for me a Simply wiring diagram that uses i2s signals to be obtained with signaling LEDs for 44.1kHz 96kHz 192kHz.
Enough for me a Simply wiring diagram that uses i2s signals to be obtained with signaling LEDs for 44.1kHz 96kHz 192kHz.
Maybe something like post #6, but with the spare Schmitt trigger and the lower monostable multivibrator connected to the data signal, with the monostable multivibrator's RC time increased to a millisecond or so.
The same disclaimers as for post #6 apply. 74HC123's from Nexperia or TI, definitely not Toshiba.
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Thanks.....
1) Data out= lock funtion?
2) Is possibile calibrate resistors/caps for?
44,1
92
192
Regarding 2), please change the 15 kohm resistor of the second monostable multivibrator into 8.2 kohm in series with a 10 kohm trimming potmeter, and the 6.8 kohm resistor of the third monostable multivibrator into 3.9 kohm in series with a 5 kohm trimming potmeter. Trimming potmeter with wiper and one fixed contact to the +5 V, resistor between the other fixed contact and the capacitor.
In the present you will (just like in the past) use a receiver IC that often has a pin for the lock LED. Which receiver IC do you use?
Jean Paul...i know...but i spoke of i2s input...i Need to read fs on a dac connected to CD transport or USB card via RJ45 connectors.
